EP 1145036 B1 20080813 - METHOD FOR IMPROVING THE WIRELESS LOCATION SYSTEM
Title (en)
METHOD FOR IMPROVING THE WIRELESS LOCATION SYSTEM
Title (de)
VERFAHREN ZUR VERBESSERUNG DES LOKALISIERUNGSSYSTEMS VON FUNKGERÄTEN
Title (fr)
PROCEDE D'AMELIORATION D'UN SYSTEME DE LOCALISATION DE TELEPHONE SANS FIL
Publication
Application
Priority
- US 9929461 W 19991213
- US 22776499 A 19990108
- US 22905699 A 19990112
Abstract (en)
[origin: WO0040993A1] A method for locating a mobile transmitter comprises the steps of (a) making a first estimate of the location of the mobile transmitter on the basis of a first transmission from the mobile transmitter; (b) causing the mobile transmitter to emit a second transmission; (c) making a second estimate of the location of the mobile transmitter on the basis of the second transmission; and (d) combining at least the first and second estimates to obtain an improved, more accurate estimate of the location of the mobile transmitter. Step (b) may comprise auditing (fig. 11c) the mobile transmitter to elicit an audit response, or terminating the call (hanging up) and then initiating another call by paging the mobile transmitter to elicit a page response. Step (d) preferably comprises averaging a plurality of statistically-independent location estimates.
IPC 8 full level
G01S 5/02 (2010.01); G01S 5/06 (2006.01); H04B 7/185 (2006.01); H04W 4/90 (2018.01); H04W 64/00 (2009.01); G01S 1/02 (2010.01)
CPC (source: EP US)
G01S 5/02 (2013.01 - EP US); G01S 5/021 (2013.01 - EP); G01S 5/0268 (2013.01 - EP US); G01S 5/06 (2013.01 - EP); H04W 64/00 (2013.01 - EP); G01S 1/026 (2013.01 - EP); H04W 4/90 (2018.01 - EP); H04W 76/50 (2018.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0040993 A1 20000713; AU 3119400 A 20000724; BR 9917165 A 20020122; CA 2360136 A1 20000713; CA 2360136 C 20080219; CN 1241031 C 20060208; CN 1333878 A 20020130; EP 1145036 A1 20011017; EP 1145036 A4 20030514; EP 1145036 B1 20080813; GB 0116707 D0 20010829; GB 2362530 A 20011121; GB 2362530 B 20031008; IL 144132 A0 20020523; JP 2002534689 A 20021015; JP 4566410 B2 20101020
DOCDB simple family (application)
US 9929461 W 19991213; AU 3119400 A 19991213; BR 9917165 A 19991213; CA 2360136 A 19991213; CN 99815520 A 19991213; EP 99965231 A 19991213; GB 0116707 A 19991213; IL 14413299 A 19991213; JP 2000592660 A 19991213